File photo dated 05/03/2009 of Michael Jackson, who has died after suffering a suspected heart attack. Paramedics were called to the 50-year-old singer's Holmby Hills home in Los Angeles and he was taken to the UCLA medical centre.

Michael Jackson may have passed away three years ago, but some of his former neighbors claim that the King of Pop's spirit still lives on.

Jackson, 50-year-old pop star who was pronounced dead on June 25, 2009 after an overdose on the surgical anesthetic propofol, has reportedly been scaring neighbors of his former Beverly Hills mansion. A source recently told the Daily Star that neighbors have heard the pop star's music recently along with his singing.

"It has freaked everyone out. When he was living there, Michael would regularly look through the curtains and see who was around," the source said. "People have heard his music coming from the house and even singing. Everyone thinks that Michael's ghost walks around the house."

One neighbor reportedly told the publication that Jackson took an interest in the afterlife, which may explain the return of his spirit.

"It is so weird. The world knew that Michael was obsessed by the afterlife, from his songs like Thriller," the neighbor said. "He believed in spirits – now his own has returned."

Although no members of Jackson's family have confirmed any belief of the pop star's spirit haunting his former mansion, many people celebrated his life on Monday by taking time to tweet about his memory.